maestro /mīˈstrō, mä-esˈtrō/

1. A master, esp an eminent musical composer or conductor
2. (Maestro®) a European system of electronic funds transfer at point of sale (EFTPOS)

• heptad
• heptads
• heptagon
• heptagonal
• heptagons
• Heptagynia
• heptagynous
• heptahedra
• heptahedron
• heptahedrons
• Heptameron
• heptamerous
• heptameter
• heptameters
• Heptandria
• heptandrous
• heptane
• heptanes
• heptapodic
• heptapodies
• heptapody
• heptarch
• heptarchic
• heptarchies
• heptarchist